This is what the prototype for Playstation Phone looks like. At least according to Engadget who also shares some of the specifications.
At first glance it looks a lot like the ill-fated PSP Go when it comes to button placement and the folding design. We recognise the four facebuttons and de-pad, but in between there is also a touchpad.
According to Engadet the Playstation Phone sports a 4" screen, a 1GHz Qualcomm MSM8655 chip, 512MB RAM, and 1GB ROM. It is likely to be using Android 3.0 and it is unclear whether we'll be playing Android titles or PSP games on the Playstation Phone. Sony Ericsson are keeping mute on the subject for the time being...